Self-lighting gas-burner



(No Model.)

A. P. JACOB. SELF LIGHTING GAS BURNER.

Patented Dec. 13, 1892.

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UNITED STATES PATENT @FFICE...

ALFRED P. JACOB, OF BROOKLYN, NEW YORK.

SELF-LIGHTING GAS-BURN ER.

SPECIFICATION forming part of Letters Patent No. 487,744, dated December13, 1892.

Application filed December 26, 1891. Serial No. 416,248. (No model.)

To all whom it mag concern:

Be it known that I, ALFRED P. JACOB, of Brooklyn, in the county of Kingsand State of New York, have invented a new and useful Improvement inSelf-Lighting Gas-Burners, of which the following is a specification.

My invention relates to an improvement in self-lighting gas-burners, inwhich a small jet of gas is left permanently burning when the gas fromthe main burner is turned off, the said jet serving to light the gas atthe main burner when the gas is turned on.

A practical embodiment of my invention is represented in theaccompanying drawings, in which- Figure 1 is a view in vertical centralsection through the tip, pillar, switch, and surrounding gauze jacket.Fig. 2 is a view in horizontal section, partly in plan, on the line w wof Fig. 1, showing the switch in position to turn off the gas from themain burner; and

Fig. 3 is a view in horizontal section on the line y y of Fig. 1,showing the switch in the position which it assumes when the gas isturned on to the main burner.

The pillar of the burner is represented by A, and may be eitherconstructed originally with a view to its adaptation to theself-lighting mechanism or it may be an ordinary pillar of a gas-burnerfitted to the purposes of self-lighting mechanism.

An ordinary lava tip is represented at B.

The pillar A is provided, preferably near its base, with an internaldiaphragm a, dividing it into an upper and lower chamber, whichcommunicate with each other through openings at and a one located aboveand the other below the diaphragm a and extending through the wall ofthe pillar. The pillar is further provided with an elongated opening aspaced, preferably, about a quadrant from the opening a and convenientlylocated in the same horizontal plane therewith, and with a small openinga extending through its wall intermediate of the openings a and (1 Theopenings a and a are below the diaphragm a.

The part which I have referred -to as the switch is represented as awhole by O, and consists of a block of metal or other suitable materialfitted snugly to the exterior of the base of the pillar, so as to rockfreely thereon in a horizontal plane and form a gas-tight joint with theexterior wall of the pillar.

The switch 0 is provided with an extended neck portion 0, in which areset, side by side, two short upwardly-extending jet-tubes D and D. Thesockets in which the tubes D and D are fixed communicate by means ofchannels (1 and d with the interior wall of the switch where it comes incontact with the exterior wall of the pillar and in the plane withtheopenings a and a The interior wall of the switch is further providedwith an elongated recess 0', which is in position to register with andform a connecting-conduit between the openings co and a through the wallof the pillar when the switch is turned on, and when the switch isturned oif the said elongated opening in the switch will rest in aposition opposite the wall of the pillar, as shown in Fig. 2, andcommunication between the lower and upper portions of the pillar-throughthe openings a and a will be completely out off. The channels at and 61,leading to the jet-tubes D and D, are so lo cated with respect to theopenings a and a through the wall of the pillar that the chanelongatedopening a through the wall of the pillar whether the switch be turned onor off and during its transit from one position to the other, and hencegas will at all times be fed to the jet-tube D and a continuous flamewill burn at its upper end. The size of such flame may be determined bymeans of an adjusting-screw (1 extending from the end of the neck of theswitch inwardly across the channel or socket communicating with thebottom of the tube D. The channel 61 is so located with respect to theopening a that when the switch is turned off the wall of the pillar willshut off the entrance to said chan nel; but during the turning of theswitch from off to on the said channel will pass the opening a andduring the moment that it is passing it gas will issue through the saidconduit d into the jet-tube D and, being ignited by the jet on the tubeD, will produce a momentary flash reaching from the flame at thejet-tube D upwardly to the burnertip, at which point it will ignite thegas issuing from said tip, the recess 0 in the switch nel at will be incommunication with the having formed communication between the upper andlower portions of the pillar slightly in advance of the transit of theconduit (1 past the opening a. The size of said flashjet may bedetermined by means of an adjusting-screw (1 As the switch reaches itson position the wall of the pillar will again out oft the entrance ofgas into the conduit (1. By this means I am enabled to locate thepermanent jet at a considerable distance from the pillar and its tip,where it will not be liable to soot and obstruct the passage-way for theescape of gas from the pillar or tip, and reduce materially the size ofthe permanent jet. i

The switch may be conveniently operated by cords passing outward, as atE E, extending from a common point of attachment 6 on the neck of theswitch in opposite directions and passing downwardly through openings ee in a base F.

I find it desirable to form the base F of a substantially-imperforatesheet of material and to surround the pillar and jet by a fine gauzecylinder or jacket G, the lower end of which is inserted within anupturned flange fwithin the margin of the base F, and the upper end ofwhich is closed by a cap-sheet F, having an opening immediately over thejet-tube D. The closed base F prevents the flaring of the permanent jetby induced currents of air, the necessary amount of air to support thecombustion being taken laterally through the gauze jacket and the latterat the same time preventing the disturbance of the jet from wind ordrafts.

It is obvious that slight changes might be resorted to in the form andarrangement of the several parts withoutdeparting from the spirit andscope of my invention. Hence I do not Wish to limit myself strictly tothe construction herein set forth; but

What I claim is- 1. The combination, with a main burner separated intochambers, one communicating with the burner-tip and the other with agassupply, of a switch adapted to open and close communication betweenthe two chambers and jet-tubes carried by the switch, one of saidjet-tubes being in permanent communication with the chamber leading tothe gassupply and the other having a momentary communication with saidchamberduring the turning of the switch, substantially as set forth.

2. The combination, with the pillar of a gas-burner separated into twochambers, one communicating with the tip and the other with thegas-supply, said pillar being provided with openings through its wall,one of said openings communicating with the cham ber leading to the tipand the other to the chamber leading to the gas-supply, of a switchseated on the pillar and having a rocking movement thereon forming agas-tight connection between its inner wall and the pillar, said switchbeing provided with a recess adapted to bring the opening through thewall of the pillarleading to one of the chambers into communication withthe opening through the pillar leading to the other chamher when theswitch is turned on, and jet-tubes carried by the switch, eachincommunication with conduits opening to the inner wall of the switch, theconduit leading to one of the jets being at all times in communicationwith an opening leading through the pillar to the chamber incommunication with the gas-supply and the conduit leading to the otherjet having momentary communication with said chamber during the swingingof the switch, substantially as set forth.

3. The combination, with the main burner subdivided into separatechambers and the switch for opening and closing communication betweenthe chambers, of a permanent jet-tube carried by the switch and meansfor regulating the supply of gas to said permanent jet-tube independentof the means of regulating the supply to the burner, substantially asset forth.

ALFRED P. JACOB.

Witnesses:

THos. J. FARRELL, GEORGE BARRY.

